We have a NetWare 6.5 SP7 server that has a GroupWise post office on it. After a reboot the cache buffer memory is at about 70%, then over a few days it drops a little down to about 60%. Then about 5 to 7 days after a reboot the cache buffer memory drops to 16% and the Miscelaneous memory jumps way up. When this happens the GroupWise performance is so terrible we have to reboot the server. On the logger screen when this happens we get the following message "NSS released 257347 cache pages upon request". Any idea on what is happening or away to prevent it?